The development of new methods to indicate the exact hour has become a new obsession among cronologistas in the 21st century. Since the development of the first atomic clocks in the years 50s with precision of milliseconds, career began with organizations such as the United States NIST (National Institute of standards and time) and the United Kingdom NPL (national physical laboratory) to develop increasingly more accurate atomic clocks. Atomic clocks are used as a source of time of high technologies and applications such as navigation by satellite and air traffic control, so how are also a source of time signal used by NTP server to synchronize computer networks. An NTP server works continuously setting the clock of the computer system to make sure that it matches broadcast by the atomic clock time. By doing this the NTP time server can keep a computer network within a few milliseconds of UTC (Universal time controlled atomic clock Coordinated). However, as remarkable that may seem this technology, it seems that mother nature already has been doing exactly the same thing with our own body clocks. The human body clock is only to be understood by science medical (whose study is called chronobiology), but what is known is not only that the body clock is extremely important in the functioning of our daily life, but is also highly accurate, and works very similarly to the time server NTPMientras as a NTP server receives the time from an atomic clock signal and adjusts clocks of computers to match systemour body clock does the same thing. The body clock works in a circadian rhythm in other words, a 24 hour clock when the sun rises in the morning part of the brain that regulates body clock called core suprachiasmatic which is located in the hypothalamus of the brain, automatically corrects for the movement of the Sun. In this way, the human body clock adjusts to the winters darker and lighter the summer months by what may be more difficult to wake up in the winter..
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